Spring-board for gymnasiums



(No Model.) V

F; MEDART. SPRING BOARD FOR GYMNASIUMS.

No. 249,475. Paterited Nov. 15,1881.

FIG-.1.

N, PETERS. PMlo-pum n hw. Wnshinglow D C UNITED STATES PATENT OFFICE.

FREDERICK MEDART, OF ST. LOUIS, MISSOURI.

SPRING-BOARD FOR GYMN ASIUMS.

SPECIFICATION forming part of Letters Patent No. 249,475, dated November 15, 1881.

Application filed April 25, 1881, .(No model.)

To all whom tt may concern:

Be it known that I, FREDERICK MEDART, a citizen of the United States, residing at the city of St. Louis, in the State of Missouri, have invented a certain new and useful Improvement in Spring-Boards for Gymnasiums, of which the following is a specification.

This invention relates to improvements in that class of spring-boards used in gymnasiums, &c., and has for its object the formation of a complete and portable device that can he moved from one place to another and be ready for use without any anchoring. I attain this object by the construction illustrated in the accompanying drawings, in which-- I Figure l is a perspective view, and Fig. 2 a vertical section.

Referring to the drawings, A represents the supporting base or frame, composed of side bars, A, and tie or cross bars B B, properly,

framed together.

0 is the spring-board, arranged in an inclined position, as shown, by being secured tofthe cross-bar B and resting upon the supportingbridge D, as indicated in Fig. 2.

It is preferred to form the spring board of strips of wood tongue and grooved together, in which case the upper ends will be tied together by a strip, 1), as shown.

. In order to add to the spring of the board, I impart a slight spring to the side bars, A, by cutting away their under sides at a, so as to leave only short supporting feet A for the frame, as clearly indicated in thedrawings.

c c are tie-bolts for bracing and securing the parts together.

In constructing the apparatus it will be necessary to form the supporting-base of a greater length than the board, so that the apparatus will not tip forward in use.

Having thus fully described my invention,

what I claim, and desire to secure by Letters Patent, is-

1. A spring-board for gymnasiums, consistin g of a spring-board, G, and supporting-base A, permanently secured together, as described, and for the purpose set forth.

2. The combination of the base A, cross-bars B B, spring-board O, and bridge-piece D, as described, and for the purpose set forth.

3. The side bars, A, of a spring-board for gymnasiuins, cut away at a, as described, and for the purpose set forth.

Signed at St. Louis, State of Missouri.

FREDERICK MEDART.

In presence of- RoBr. BURNs, P. R. STANGE. 

